Where and how is electricity generated?
It's generated in power plants using some kind of fuel.
What happens after electricity generation?
Electricity gets distributed to the users.
Why is the process of energy distribution difficult?
Power plants are usually distant from cities and houses, so an infrastructure network is needed.
What's the name of the network infrastructure for electricity?
Power grid / electrical grid
What do power grids do?
They operate long distance electricity transfer.
What change does electricity go through to be passed onto the power grid?
The voltage must be increased.
How and where can the voltage of electricity be increased?
With the use of a transformer in step-up substations.
What is the main conductor of electricity on a power grid called? What material is it made of?
Transmission lines - metal or aluminium cables
What do transmission lines do? What types of transmission lines exist?
Transmission lines carry electricity from the source to the users. They can be overhead or underground.
What happens to transmission lines when they reach a city?
They usually go underground.
What happens to electricity when it reaches a city?
Its voltage needs to be decreased.
How and where can voltage be decreased?
In step-down substations with the use of a transformer.
What do distribution lines do?
They distribute electricity to houses in a city.
What's the difference between distribution lines and transmission lines?
Distribution lines transport low voltage electricity, transmission lines carry high voltage electricity
What happens when electricity reaches a house?
It goes through a meter.
What does a meter do?
It measures the amount of electricity used in a building.
